Battery Rundown Protection; Electric Power Management - Hummer H3T Owner's Manual

04AKENG59_H3T.fm Page 135 Thursday, July 31, 2008 12:07 PM
■ BATTERY RUNDOWN
PROTECTION
This feature is designed to protect
your vehicle's battery. If the Dome
Lights are left on after the ignition
is turned off, then this system will
shut the lights off after 20 minutes.
■ ELECTRIC POWER
MANAGEMENT
This system monitors the tempera-
ture and charge status of the vehi-
cle's battery and automatically
adjusts the voltage to enhance
performance and extend battery
life.
This system monitors the electrical
load of the vehicle's battery and
automatically increases the idle
speed of the engine to compen-
sate for heavy electrical load
conditions.
Section 1
Heavy electrical loads may occur
when several of the following
systems are on simultaneously:
• Headlight High/Low Beams
• Fog Lights
• Climate Controls/Rear Window
Defogger
• Heated Seats
• Engine Cooling Fan
Using the accessory power outlets
or pulling a trailer will also produce
heavy electrical loads.
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